Oil-well equipment



l Bm 11, 11924 l v R. D. THOMPSON lET AL OIL WELL EQUIPMENT Filed OCb. 28

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UNH-TED niet PATENT @FFHCEO RBERT D. THOMPSON AND JOHN PENRDD, 0F OULGEE, OKLAHOMA OIL-wma. pourraient.

Application led October 28, 1922. Serial Ito. 597,596.

ToaZZ/wfhomtmay concern:

Be it known that we, ROBERT D. THOMPSON and JOHN PENROD, citizens of the United States, and residents of Okmulgee, in the county of Okmulgee and State of Oklahoma, have invented certain new and useful llmprovements in Oil-Well Equipments, vof which the following is a specification. rllhis invention relates to oil well equipment/ and more particularly to a pump ther for.

B ieily stated an important object of this invention is to preventthe sand in the oil from lodging between'the plunger and the working barrel so that the working tit between the plunger andthe working barrel will not be interfered with by the sand.

Further the invention forming the subject matter of this application aims to provide,

simple means whereby the improved pump may be withdrawn from the wellwithout being injured or mutilated.

A further object is to provide a pump of the character specified which is of highly simplified construction, durable in use and cheap to manufacture.

Otherobjects and advantages of the invention will be apparent during the course of the following description.

In the laccompanying drawing, forming a part of thisapplication, wherein like numerals are employed to designate like parts throughout thesame,t

Figure 4 is a side elevation of a guidemember embodied in the invention, the said guide member acting to prevent the sand excluding sleeve from being mutilated durin'the removal of the pump from the well.

igure 5 is a detail sectional view through thepump, the view illustrating the position ,the pump plunger assumes during its removal'from the well.

lin the drawings wherein for the purpose of illustration is shown a @preferred embodiment of the invention the numeral 5.

designates a working barrel secured to the lower portion of -a tubing 6 through the medium of a cou ling 7 and a sucker rod 8 is arranged wit in the tubing for reciprocating a plunger 9. As illustrated in Figure 1 the lower portionof the plunger 9 is provided with'the usual valve 11 which is seated on the upward movement ofthe plunger and which is opened on the downward movement of the same `whereby the oil is then elevated on the upward stroke lof the plunger rod, all of which is old and well known.'

` '.lhe plunger may be used with or with out the cup valve 12 and in case of sandy format-ions the cup valve-12 may be omitted.

Figure 1 also illustrates that the lower portion of the working ybarrel 5 may be provided with the usual standing valve 14 which allows the oil to enter the working barrel but which prevents the escape of the oil through the lower end of the working' barrel.

'llhe improvementforming the subject matter of this application resides in a working sleeve or traveling sleeve 16 snugly fitted on the plunger 9 and having its lower portion interiorly screw threaded for thread' ed engagement with the lower portion of the plunger as indicated at 17.

As illustrated in Figure 2 the lower portion of the sleeve '16 is exteriorly reduced as indicated at 20 to forma wrench engaging surface. Any burrs left on the reduced portion 2O as the result of t-he use of a wrench .on the sleeve will not interfere with the free movement of the sleeve 16 in the,

working barrel or 'loosen the working lit which is ground between the parts.

0n the downward stroke'of the plunger 9 oil is introduced into the plunger and the oil passes out through a plurality of oil discharge. slots 23 in the upper portion of the plunger.

It will be observed that the upper end of the sleeve 16 is beveled as indicated at 24 to define a sharp edge which scrapes along the interior of the working barrel and prevents sand from settling.

`When the pump is not in operation, the sand in the oil above the pump settles and to avoid the settlement of sand between the working barrel and the plunger we have pro? l vided a beveled edge 24. The beveled edge 'not only maintains the working barrel free 'a shoulder which terminates at the lower end ofthe slots 23 so that sand is prevented from dropping below the openings 23.

When it is desired to withdraw the pump l from the well an upward movement is eX- erted on the sucker rod and the sharpened upper end of the sleeve '16 is engaged with a guide rod 26 which is loosely. mounted on the upper end of the working barrel 5. 'lhe upper end of the guide member 26 is slightly rounded as .indicated at 30 so' that it will freely pass the several joints encountered during the withdrawal of the pump. Figure 1 illustrates that the upper portion of the plunger is extended beyond the sleeve 16 and the extended portion of the plunger is snugly received within the tubular guide 26 during the removal of the plunger from the well.

As the lower portion of the guide member 26 is eXteriorly reduced in diameter it will be snugly received in the upper portion 24y of the barrel 16 so that the barrel will be held against extensive lateral movement. Thatis to say the guide member 26 will contact with the side of the tubingand thereby limit the l lateral vmovement of the barrel 16. Furtherdesignated by the numeral 27.

more as the sharpened upper end 24 of the barrel 16 is engaged with the lower portion of the member 26 the said sharpened end cannot flatly engage the several pipe ends encountered during the withdrawal of the working barrel from the well. v

Attention is directed to the fact that'the sand above the tubular guide 26 may pass between the guide andthe lower piece of tubing 6 andthe lower portion of the guide 26 is scalloped for the return or settlement of the sand, the said scalloped portionbeing lfn operation the pump 9 is operated in the usual manner and the oil passes out through the slots 23 of which there may be any desired number. On each stroke of the pump the beveled edge 24 scrapes'the interior of the barrel 5 and thereby maintains the same free of sand. ln this manner sand is positivelv prevented from lodging between the sleeve 16 and the interior of the barrel.

' When the pump is stopped the sand setinvente tles and the beveled upper edge 24` directsl the sand through the openings 23. When the pump is subsequently operated the Sand which has been directed into the plunger will be forced out by the oil. p i

With reference to the foregoing description taken in connection with the accompanying drawings, it will be seen that the improved pump will not have. to -be pulled frequently to kreplace those parts which have rapidly wornas the result of the presence of sand. Consequently the production lof oil is facilitated and the life of the parts is greatly prolonged.

1n carrying out the invention the sleeve or liner 16 is preferably of a metal softer than the metal of the barrel 5, so that any wear which occurs will be almost entirely on the liner.l rlhus, when it is desired to repair the pump in case of wear it 'is only necessary to replace the sleeve 16 by a new one as the wear is almost entirely onthe diner.

Having thus described the invention, what is claimed is 1.0'llhe combination of a plunger provided adjacent its upper end with oil passages, and a sleeve connected to the plunger and terminating adjacent said oil passages, the upper end of said sleeve being provided with a combined sand scrapen and sand guide, by means of which sand upon settling is directed into the plunger, the bore of said sleeve being enlarged adjacent the top of the sleeve whereby to form a shoulder located at the lower end of said passages, and means whereby to protect and guide the sleeve during its withdrawal from a well. f

2. A pump for wells comprising a plunger, a sleeve mounted on the plunger and terminating below the top of the same, and a tubular guide arranged in the path of travel of said sleeve and constituting a protecting means for the upper end of the same, the

upper end of the sleeve being formed with sand.

ROBERT D. THOMPSN. JUHN PENROD. 

